(a) We can use the identity cos(180° - θ) = -cos(θ) to rewrite cos(165°) as cos(180° - 15°) cos(165°) = cos(180° - 15°) = -cos(15°) To find cos(15°),
we can use the half-angle formula for cosine: cos(15°) = cos(30°/2) = sqrt((1 + cos(30°))/2) = sqrt((1 + sqrt(3)/2)/2) = (sqrt(2) + sqrt(6))/4
Therefore, cos(165°) = -cos(15°) = -(sqrt(2) + sqrt(6))/4 (b) Using the product-to-sum identity, we have cos(80°)cos(20°) + sin(80°)sin(20°) = cos(80° - 20°) = cos(60°) = 1/2 Therefore, cos(80°)cos(20°) + sin(80°)sin(20°) = 1/2.
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The number 52m is a perfect cube. Find the smallest positive integer value of m.
The smallest positive integer value of m is 676.
To find the smallest positive integer value of m, we need to factor 52m into its prime factors and find the smallest value of m that makes 52m a perfect cube.
First, let's factor 52m into its prime factors:
52m = 2 * 2 * 13 * m
A perfect cube has all of its prime factors raised to the power of 3. So, in order for 52m to be a perfect cube, we need to have two more 2's, two more 13's, and two more m's.
This means that m must be equal to 2 * 2 * 13 * 13 = 676.
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Let A be a 3×3 matrix such that A^2 −5A+7I=O
Statement I: A^−1 = 1/2 (5I−A)
Statement II: The polynomial A^3−2A^2−3A+I can be reduced to 5(A−4I) Then:
a. both the statement are true
b. both the statement are false
c. statement -I is true, but statement -II is false
d. statement -I is true, but statement -II is true
The correct answer is option b. both the statement are false.
Given that A is a 3×3 matrix such that A^2 −5A+7I=O
Statement I: A^−1 = 1/2 (5I−A)
To find the inverse of a matrix, we need to multiply both sides of the equation by A^−1
A^−1(A^2 −5A+7I)=A^−1(O)
A−5I+7A^−1=O
A^−1=1/7(5I-A)
This statement is false because the inverse of matrix A is not equal to 1/2 (5I−A).
Statement II: The polynomial A^3−2A^2−3A+I can be reduced to 5(A−4I)
To reduce the polynomial, we need to factor it.
A^3−2A^2−3A+I=(A−1)(A^2−A−I)
This statement is also false because the polynomial A^3−2A^2−3A+I cannot be reduced to 5(A−4I).
Therefore, both statements are false and the correct answer is option b. both the statement are false.
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Help please i need it by tonight
Answer:
20
Step-by-step explanation:
The following unit multipliers are used:
1 loaf of bread = 400g of flour = 0.4kg of flour: [tex]\frac{0.4kg Of Flour}{1 loaf}[/tex]
1 day = 64 loaves of bread: [tex]\frac{64 loaves}{1 day}[/tex]
∴Mass of flour needed to last for 20 days:
[tex](20 days)[/tex]× [tex]\frac{64loaves}{1day}[/tex] ×[tex]\frac{0.4 kg}{1 loaf}[/tex]
= 512 kg of flour
1 sack = 25 kg of flour
∴ x sacks of flour = 512 kg of flour
Cross-multiplication is applied:
(x sacks of flour)(25 kg of flour) = (1 sack)(512 kg of flour)
∴ x sacks of flour = [tex]\frac{(1 sack)(512kg Of Flour)}{25 kg Of Flour}[/tex]
= 20.48 sacks of flours
∴The minimum number of sacks = 20
The graph shows the number of birdhouses Penn and his father can build if they have enough time to build no more than 10 birdhouses. What is the domain of this graph?

The answer of the given question based on the graph shows number of birdhouses Penn and his father can build, if they have enough time to build not more than 10 birdhouses, the correct option is A).
What is Graph?
In mathematics, a graph is a collection of points (called vertices or nodes) and the lines or arcs (called edges) that connect them. Graphs are used to model and analyze a variety of real-world situations, such as social networks, transportation systems, and electrical circuits.
Based on the given graph, the horizontal axis represents the number of birdhouses Penn's father can build and the vertical axis represents the number of birdhouses Penn can build. The graph is bounded by the line x + y = 10, which means that the sum of number of the birdhouses Penn and his father can build cannot be exceed more than10.
Therefore, the domain of this graph is the set of possible values for the number of birdhouses Penn's father can build, subject to the constraint that the sum of the number of the birdhouses Penn and his father can build cannot be exceed more than 10. This domain is the set of non-negative integers less than or equal to 10, inclusive. In interval notation, this can be written as [0, 10].
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Complete question:-The graph shows the number of birdhouses Penn and his father can build if they have enough time to build no more than 10 birdhouses. What is the domain of this graph?
36 flowers in 3 bouquets
This is called the unit rate.
Answer: Yes, you are correct.
Step-by-step explanation:
The relationship between the number of flowers and the number of bouquets is an example of a unit rate.
Answer:
yes
Step-by-step explanation:
it is a unit rate
FOR 60 POINTS!!
The ratio of diagonal to length of a rectangular computer is 13:7.
If the actual length is 18 inches, what is the measure of the width of the computer? Provide an answer accurate to the nearest hundredth.
Answer:
Step-by-step explanation:
ISSA PARADE INSIDE MY CITY YEAHHHHH
If z varies jointly as x and y, and z=6 when x=4 and y=10, find z when x=20 and y=8
If z varies jointly as x and y, then the value of z when x = 20 and y = 8 is 24.
When a variable varies jointly as two other variables, it means that the variable is directly proportional to the product of the two other variables.
In this case, we can use the formula:
z = kxy
where k is a constant of proportionality.
We can find the value of k by using the given values of z, x, and y:
6 = k(4)(10)
6 = 40k
k = 6/40
k = 3/20
Now that we know the value of k, we can use the formula to find z when x = 20 and y = 8:
z = (3/20)xy
z = (3/20)(20)(8)
z = (3)(8)
z = 24
Therefore, the value of z when x = 20 and y = 8 is 24.
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Lisa is 12(4)/(5) years old. Bill is 1(1)/(6) years older than Lisa and Jane is 1(1)/(3) years older than BilL How old is Jane?
The final answer of Jane is 13(9)/(30) years old.
To find out how old Jane is, we need to first calculate Bill's age and then add 1(1)/(3) years to it.
Here are the steps:
1. Calculate Bill's age:
- Start with Lisa's age: 12(4)/(5) years
- Add 1(1)/(6) years to it: 12(4)/(5) + 1(1)/(6) = 12(24)/(30) + 1(5)/(30) = 12(29)/(30) = 12 + 29/30 = 12(29)/(30) years
2. Calculate Jane's age:
- Start with Bill's age: 12(29)/(30) years
- Add 1(1)/(3) years to it: 12(29)/(30) + 1(1)/(3) = 12(29)/(30) + 1(10)/(30) = 12(39)/(30) = 12 + 39/30 = 12 + 1(9)/(30) = 13(9)/(30) years
So, Jane is 13(9)/(30) years old.
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The expression 20 - 4.65 represents the amount of change one customer
receives after ordering from the menu board. Explain what each part of the
expression represents. Do you know what the customer ordered? Explain
your reasoning.
The result of the formula "20 - 4.65" is 15.35, which corresponds to the amount of change the customer gets.
Solving linear expressionsExpressions are separated by mathematical sign i.e positive or negative.
The expression "20 - 4.65" represents the amount of change a customer would receive after ordering from the menu board.
The first part of the expression, "20", represents the amount of money the customer paid for their order. This is the total cost of the items they purchased from the menu board.
The second part of the expression, "4.65", represents the amount of money that the customer spent on their order. This is the subtotal of the items they purchased before tax and any other fees that may be added to the bill.
To calculate the change the customer receives, you subtract the amount the customer spent from the amount they paid. So in this case, the expression "20 - 4.65" gives us the answer of 15.35, which represents the amount of change the customer receives.
As for what the customer ordered, we cannot know for sure based on this expression alone. It's possible that the customer ordered a single item that cost exactly $4.65, or they may have ordered multiple items that added up to that subtotal. Without more information about the menu board and the prices of the items, it's impossible to determine exactly what the customer ordered.
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DEFGTSRQ.
G
24
24
F
Save answer
24
24
E
Q
230
R
8
8
T
8
S
D
What is the similarity ratio of DEFG to TSRQ?
Simplify your answer and write it as a proper fraction, improper fraction, or whole number.
The ratio of similarity DEFG to TSRQ is '3: 1'.
The similarity of quadrilateral:Two quadrilaterals are considered similar if they have the same shape but may have different sizes. Similar quadrilaterals have corresponding angles that are congruent, and their corresponding sides are in proportion to each other.
The ratio of similarity is a measure of how much two geometric figures are enlarged or reduced to become similar.
Here we have
Quadrilateral DEFG and Quadrilateral TSRQ.
Where DEFG similar to TSRQ
Hence, the ratio of corresponding sides will be equal
=> DE/TS = EF/SR = FG/RQ = DG/TQ
=> 24/8 = 24/8 = 24/8 = 24/8 = 3/1
Therefore,
The ratio of similarity DEFG to TSRQ is '3: 1'.
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Nicole spots an airplane on radar that is currently approaching in a straight line, and that will fly directly overhead. The plane maintains a constant altitude of 7225 feet. Nicole initially measures an angle of elevation of 15 ∘ ∘ to the plane at point � A. At some later time, she measures an angle of elevation of 33 ∘ ∘ to the plane at point � B. Find the distance the plane traveled from point � A to point � B. Round your answer to the nearest tenth of a foot if necessary.
Answer: The plane traveled 15838.5 feet from point A to point B.
The function f is given by f (x) = e^0.07x What is the continuous growth rate?
The continuous growth rate of a function is given by its derivative.
So, taking the derivative of f(x) with respect to x, we get:
f'(x) = 0.07e^(0.07x)
Therefore, the continuous growth rate of the function is 1.07.
An inequality is shown.
Select the statement(s) and number line(s) that can represent the inequality. Click all that apply.
Fοr the inequality 12 + 11/6x ≤ 5 + 3x, the cοrrect οptiοns are -
E. 6 ≤ x
F. The sοlutiοn set is (x l x∈R, x ≥ 6].
What is an inequality?In Algebra, an inequality is a mathematical statement that uses the inequality symbοl tο illustrate the relatiοnship between twο expressiοns. An inequality symbοl has nοn-equal expressiοns οn bοth sides. It indicates that the phrase οn the left shοuld be bigger οr smaller than the expressiοn οn the right, οr vice versa.
Tο sοlve the inequality 12 + 11/6x ≤ 5 + 3x, we can fοllοw these steps -
Mοve all the terms cοntaining x tο οne side -
12 + 11/6x - 3x ≤ 5
Simplify the left-hand side -
72/6 + 11/6x - 18/6x ≤ 5
(72 + 11x - 18x)/6 ≤ 5
(72 - 7x)/6 ≤ 5
Multiply bοth sides by 6 tο eliminate the fractiοn -
72 - 7x ≤ 30
Mοve all the terms cοntaining x tο οne side -
72 - 30 ≤ 7x
42 ≤ 7x
Divide bοth sides by 7 (since 7 is pοsitive, we dοn't need tο flip the inequality) -
6 ≤ x
Therefοre, the cοrrect statement(s) and number line(s) that can represent the inequality are -
E. 6 ≤ x
F. The sοlutiοn set is (x ∈ R, x ≥ 6].
This means that the sοlutiοn set includes all real numbers greater than οr equal tο 6.
The interval nοtatiοn (6, ∞) cοuld alsο be used tο represent this sοlutiοn set.
Optiοn A is incοrrect because it οnly includes natural numbers (pοsitive integers), but the sοlutiοn set includes all real numbers greater than οr equal tο 6.
Optiοn B is incοrrect because it shοws a number line frοm -7 tο 7, which is nοt relevant tο the sοlutiοn set.
Optiοn C is incοrrect because it shοws an arrοw with a filled circle mοving tοwards pοsitive infinity, which implies that the sοlutiοn set is all pοsitive numbers, but the inequality οnly requires x tο be greater than οr equal tο 6.
Optiοn D is incοrrect because it is tοο limited in scοpe - it οnly tells us that the number substituted fοr x is greater than 6, but dοesn't give us the full sοlutiοn set.
Therefοre, οptiοn E and F are cοrrect.
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Math part 4 question 8
The function is decreasing in the interval (3, ∞).
Explain about the decreasing function?You must first compute the derivative, then make it equal to 0, and then determine whether zero values your function is negative between in order to determine whether a function is decreasing. In order to determine once the function is negative and, consequently, decreasing, test values from all sides of these.f(x) = -x² + 6x - 4
Differentiate the equation with respect to 'x'.
f'(x) = -2x + 6
Put f'(x) = 0
-2x + 6 = 0
x = 6/2
x = 3 (critical point)
Now, write the function as:
f(x) = -x² + 6x - 4
-(x² - 6x + 4) (negative form)
Thus, the function is decreasing in the interval (3, ∞)
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irst, rewrite (11)/(20) and (13)/(25) so that they have a common denominator
Answer:
55/100 and 48/100, in decimal form it will be 0.55 and 0.48
Step-by-step explanation:
11/20 and 12/25
The common denominator in this question will be 100
55/100 and 48/100
What will be the values of x if the distance between the
points (x, 4) & (3, x) be 131/2 ?
The values of x if the distance between the points (x, 4) & (3, x) be 131/2 are approximately 9.39 and -4.39.
To find the values of x if the distance between the points (x, 4) & (3, x) be 131/2, we can use the distance formula:
D = √((x2 - x1)² + (y2 - y1)²)
Where D is the distance, (x1, y1) and (x2, y2) are the coordinates of the two points.
Plugging in the given values, we get:
131/2 = √((3 - x)² + (x - 4)²)
Squaring both sides and simplifying, we get:
169 = (3 - x)² + (x - 4)²
Expanding and rearranging, we get:
2x² - 14x - 110 = 0
Using the quadratic formula, we can find the values of x:
x = (-(-14) ± √((-14)² - 4(2)(-110))) / (2(2))
x = (14 ± √(196 + 880)) / 4
x = (14 ± √1076) / 4
x ≈ 9.39 or x ≈ -4.39
So the values of x are approximately 9.39 and -4.39.
Therefore, the values of x if the distance between the points (x, 4) & (3, x) be 131/2 are approximately 9.39 and -4.39.
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Find the volume of each figure round to nearest hundredth if needed
For the given cuboid, it's volume value is deduced as 30 cm³.
What is volume?
Each thing in three dimensions takes up some space. The volume of this area is what is being measured. The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.
The figure is given as a cuboid.
The length of the cuboid is 5 cm.
The breadth of the cuboid is 6 cm.
The height of the cuboid is 1 cm.
The formula for volume of cuboid is given as -
Volume = length × breadth × height
Substitute the values into the equation -
Volume = 5 × 6 × 1
Volume = 30 cm³
Therefore, the volume value is obtained as 30 cm³.
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HELP PLEASE! You have 3/4 of a leftover pizza. If a slice is 1/8 of a pizza, how many slices are left?
A. 3
B. 6
C. 9
D. 12
Answer:
B. 6
Step-by-step explanation:
3/4 can be added to itsef to be 6/8
6/8
---- 6/1 = 6
1/8
Answer:
Step-by-step explanation:
tbh i don't know how to explain it but i feel like its D i multiply and add
Now the area can be calculated as: [(7)/(3)t^((3)/(2))-(1)/(5)t^((5)/(2))]_(0)^(7)
The area is 893/15.
The area can be calculated by evaluating the given expression at the limits of integration and subtracting the two values.
we will evaluate the expression at the upper limit of integration, t = 7:
[(7)/(3)(7)^((3)/(2))-(1)/(5)(7)^((5)/(2))] = [(7)/(3)(7^(3/2))-(1)/(5)(7^(5/2))] = [(7)/(3)(49)-(1)/(5)(16807/49)] = [(343/3)-(33614/245)] = [(343/3)-(274/5)] = [(1715/15)-(822/15)] = 893/15
we will evaluate the expression at the lower limit of integration, t = 0:
[(7)/(3)(0)^((3)/(2))-(1)/(5)(0)^((5)/(2))] = [(7)/(3)(0)-(1)/(5)(0)] = 0
we will subtract the two values to find the area:
893/15 - 0 = 893/15
Therefore, the area is 893/15.
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Use the confidence interval to find the margin of error and the sample mean
(12.0, 14.8)
Margin of error = 1.4
Sample mean = 13.4
=============================================================
Explanation:
To find the margin of error, we subtract the endpoints and divide by 2.
(b-a)/2 = (14.8-12.0)/2 = 1.4 is the margin of error
The b-a portion calculates the width of the confidence interval. It's the distance from one endpoint to the other. Splitting that in half gives the "radius" so to speak of this interval.
----------
The sample mean is at the midpoint of those given confidence interval endpoints.
The midpoint formula will have us add up the values and divide by 2
(a+b)/2 = (12.0+14.8)/2 = 13.4 is the sample mean
The a+b portion is the same as b+a, meaning we could have written that formula as (b+a)/2 as indicated in the next section.
-----------
Take note how similar each formula is:
margin of error = (b-a)/2sample mean = (b+a)/2The only difference is one has a minus sign and the other has a plus sign.
Assignment Active Solving a Rational Equatio Solve: (x^(2)-x-6)/(x^(2))=(x-6)/(2x)+(2x+12)/(x) After multiplying each side of the equation by the LCD and simplifying, the resulting equation is
The LCD in this case is 2x^(2). So the solutions to the equation are x = 0 and x = 5.
To solve the equation, we first need to find the least common denominator (LCD) of all the fractions.
Next, we multiply each side of the equation by the LCD to eliminate the fractions:
2x^(2)*(x^(2)-x-6)/(x^(2)) = 2x^(2)*(x-6)/(2x) + 2x^(2)*(2x+12)/(x)
Simplifying the equation gives us:
2x^(2)-2x-12 = x^(2)-3x-12
Next, we move all the terms to one side of the equation:
x^(2)-5x = 0
Finally, we can factor the equation and set each factor equal to zero:
x(x-5) = 0
x = 0 or x = 5
So the solutions to the equation are x = 0 and x = 5.
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find from the first principle the derivative with respect to x of the function y equals to x square minus x + 3
Answer:
To find the derivative of the function y = x^2 - x + 3 using the first principle, we start by applying the definition of the derivative:
f'(x) = lim (h -> 0) [f(x+h) - f(x)] / h
where f(x) = x^2 - x + 3.
Now we substitute the function into the equation and simplify:
f'(x) = lim (h -> 0) [(x+h)^2 - (x+h) + 3 - (x^2 - x + 3)] / h
f'(x) = lim (h -> 0) [(x^2 + 2xh + h^2 - x - h + 3) - (x^2 - x + 3)] / h
f'(x) = lim (h -> 0) [2xh + h^2 - h] / h
Now we can cancel out the h in the numerator and denominator, leaving:
f'(x) = lim (h -> 0) [2x + h - 1]
Finally, we take the limit as h approaches 0:
f'(x) = 2x - 1
Therefore, the derivative of y = x^2 - x + 3 with respect to x is f'(x) = 2x - 1.
Step-by-step explanation:
Answer:
[tex]\dfrac{\text{d}y}{\text{d}x}=2x-1[/tex]
Step-by-step explanation:
Differentiating from First Principles is a technique to find an algebraic expression for the gradient at a particular point on the curve.
[tex]\boxed{\begin{minipage}{5.6 cm}\underline{Differentiating from First Principles}\\\\\\$\text{f}\:'(x)=\displaystyle \lim_{h \to 0} \left[\dfrac{\text{f}(x+h)-\text{f}(x)}{(x+h)-x}\right]$\\\\\end{minipage}}[/tex]
The point (x + h, f(x + h)) is a small distance along the curve from (x, f(x)). As h gets smaller, the distance between the two points gets smaller. The closer the points, the closer the line joining them will be to the tangent line.
To differentiate y = x² - x + 3 using first principles, substitute f(x + h) and f(x) into the formula:
[tex]\implies \displaystyle \dfrac{\text{d}y}{\text{d}x}=\lim_{h \to 0} \left[\dfrac{(x+h)^2-(x+h)+3-(x^2-x+3)}{(x+h)-x}\right][/tex]
Simplify the numerator:
[tex]\implies \displaystyle \dfrac{\text{d}y}{\text{d}x}=\lim_{h \to 0} \left[\dfrac{x^2+2hx+h^2-x-h+3-x^2+x-3)}{x+h-x}\right][/tex]
[tex]\implies \displaystyle \dfrac{\text{d}y}{\text{d}x}=\lim_{h \to 0} \left[\dfrac{2hx+h^2-h}{h}\right][/tex]
Separate into three fractions:
[tex]\implies \displaystyle \dfrac{\text{d}y}{\text{d}x}=\lim_{h \to 0} \left[\dfrac{2hx}{h}+\dfrac{h^2}{h}-\dfrac{h}{h}\right][/tex]
Cancel the common factor, h:
[tex]\implies \displaystyle \dfrac{\text{d}y}{\text{d}x}=\lim_{h \to 0} \left[\:2x+h-1\:\right][/tex]
As h → 0, the second term → 0:
[tex]\implies \dfrac{\text{d}y}{\text{d}x}=2x-1[/tex]
Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express P in the form P(x)=D(x)⋅Q(x)+R(x).
P(x)=−x3−2x+6D(x)=x+1
To divide two polynomials, P(x) and D(x), we can use either synthetic or long division. In this example, we'll use long division to divide P(x) by D(x) and express P in the form P(x)=D(x)⋅Q(x)+R(x).
First, we must make sure the degree of P(x) is greater than or equal to the degree of D(x). In this case, P(x)=-x^3-2x+6 and D(x)=x+1, so P(x) has a greater degree than D(x).
Next, we must write down P(x) and D(x) with the same degree. In this example, we can multiply D(x) by -x^2 to get -x^3+1. Then, P(x)=-x^3-2x+6 and D(x)=-x^3+1.
We can now start the long division process. First, we divide the leading coefficients, -1 and -1, so our quotient is 1. We then multiply the quotient by D(x), which gives us -x^3+1. We subtract this result from P(x), and the result is -2x+6.
Next, we divide the leading coefficients, -2 and -1, so our quotient is 2. We then multiply the quotient by D(x), which gives us -2x^2+2. We subtract this result from our previous result, -2x+6, and the result is 6.
Finally, we have reached the end of the long division process. Our quotient is Q(x)=2x+1 and our remainder is R(x)=6. Therefore, P(x)=D(x)⋅Q(x)+R(x), or -x^3-2x+6=(-x^3+1)⋅(2x+1)+6.
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Factor the following polynomial given that it has a zero at 10 with multiplicity 2 (x^(4)-7x^(3)-118x^(2)+460x+4200)
The factorization of the polynomial is (x-10)² (x² + 13x + 42).
To factor the given polynomial, we can use the fact that it has a zero at 10 with multiplicity 2. This means that (x-10)² is a factor of the polynomial. We can divide the polynomial by (x-10)² using long division to find the other factor.
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In 1846 the depth of the river was 5 feet deep.
In 1847 it dropped to 3.6 feet.
This year, 1848, it rose to 5.7 feet.
Find the percent change in river depth & complete the
table.
The percentage change of the depth from 1846 to 1847 is 28%.
The percentage change of the depth from 1846 to 1848 is 14%.
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Percentage change formula:
= [ (Final percentage - Initial percentage) / Initial percentage ] x 100
Percentage change of the depth from 1846 to 1847.
= [ (3.6 - 5) / 5 ] x 100
= 1.4/5 x 100
= 1.4 x 20
= 28
Percentage change of the depth from 1846 to 1848.
= [ (5.1 - 5) / 5 ] x 100
= 0.7/5 x 100
= 0.7 x 20
= 14
Now,
Year 1847 1848
Depth 3.6 feet 5.7 feet
Percentage change 28% 14%
Thus,
The percentage change of the depth from 1846 to 1847 and 1846 to 1848 is 28% and 14%
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The required measure of the angle S in the isosceles trapezoid is ∠S = 115°.
What is the angle?Orientation of the one line with respect to the horizontal or other respective line is known as a measure of orientation and this measure is known as the angle.
For isosceles trapezoid,
The sum of the opposite angle is equal to 180°.
∠Q + ∠S = 180
Substitute the value in the above expression,
65 + ∠S = 180
∠S = 180 - 65
∠S = 115°
Thus, the required measure of the angle S in the isosceles trapezoid is ∠S = 115°.
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Which graph is correct?
The system of inequalities is correctly graphed on Shannon's graph.
Which graph shows the system of inequalities?Here we have the following system of inequalities:
y ≥ (1/2)*x - 1
x - y > 1
We can rewrite the second inequality as:
y < x - 1
Then the system becoimes:
y ≥ (1/2)*x - 1
y < x - 1
The first line will be one with positive slope, it is solid (due to the symbol ≥) and the shaded area is above the line.
For the second we will have a dashed line, and now the shaded area is below the dashed line.
From that, we caonclude that Shannon's graph is the correct one.
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What is the product of -2x^3+x-5 and x^3-3x-4?
(A) Show your work.
(B) Is the product equal to (x^3-3x-4)*(-2x^3+x-5)? Explain your answer.
Answer:(A) Show your work.
Step-by-step explanation:(A) Show your work.
Answer: holy math sucks but check the explanation i gotchu
Step-by-step explanation: A) -2x^6 + 3x^5 - 2x^4 - 15x^3 + 4x^2 -20x - 20
B) No, the product is not equal to (x^3-3x-4)*(-2x^3+x-5). This is because the order of the terms in the product is different than the order of the terms in the expression. The product takes the form of -2x^6 + 3x^5 - 2x^4 - 15x^3 + 4x^2 -20x - 20, whereas the expression has the form of (-2x^3+x-5)*(x^3-3x-4).
A parabola opening up or down has vertex (1, 0) and passes through (0, -1).
equation in vertex form.
Simplify any fractions
Write its
Plsss y’all I need help
The quadratic function written in vertex form is:
y = -1*(x - 1)^2
What is the equation of the parabola?We know that the vertex of the parabola is (1, 0), so if the leading coefficient is a, we can write the vertex form:
y = a*(x - 1)^2 + 0
y = a*(x - 1)^2
In this case we know two points on the parabola, the vertex which is at(1, 0) and the y-intercept which is (0, -1).
Using the vertex (1, 0) we can write the parabola as:
y = a*(x - 1)^2 + 0
y = a*(x - 1)^2
Now we can use the values of the other point and replace this in the formula above so we get:
-1 = a*(0 - 1)^2
-1 = a
Then the quadratic function is:
y = -1*(x - 1)^2
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t Marie's Beading Boutique, 32 out of the 32 beads on clearance are plastic. What percentage of beads on clearance are plastic?
Write your answer using a percent sign (%).
Answer:
100%
Step-by-step explanation:
If all 32 the beads were plastic it would be 100%